A tamper resistant electrical outlet maintains its electrical contacts in a non-energized state until an object is inserted into an outlet opening for a different electrical contact. In this way, an object contacting the electrical contact behind one contact opening will not be subjected to electrical current unless another object is simultaneously inserted sufficiently far into another outlet opening. Insertion of an object, such as the prong of an electrical plug, into either outlet opening will move an actuator, thereby moving a respective live contact toward the electrical contact that is associated with the other outlet opening. Although the electrical outlet does not preclude objects from being inserted into its outlet openings and engaging the associated electrical contacts, only by simultaneous insertion of two different objects (such as two prongs of an electrical plug) into the different outlet openings will the electrical contacts become energized.

A power adapting device includes an upper housing, a power conversion module, and a lower housing. The upper housing comprises a first slot and a second slot. A first power adapter interface is disposed at a bottom of the first slot. A second power adapter interface is disposed at a bottom of the second slot. The first power adapter interface conducts an AC power signal to an external device. The second power adapter interface conducts a DC power signal to an external device. The power conversion module converts the AC power signal into the DC power signal and to transmit the converted DC power signal to the second power adapter interface. The lower housing covers the power conversion module with the upper housing. The lower housing includes a cable transfer interface for transmitting the external power supply to the first power adapter interface or the power conversion module.

This invention relates to configurable electrical receptacles and more particularly to electrical receptacles that accept in-situ replacement of an insert providing a specific functionality within an electrical receptacle which is configurable to function or user accessible feature.

This invention relates to configurable electrical receptacles and more particularly to electrical receptacles that accept in-situ replacement of an insert providing a specific functionality within an electrical receptacle which is configurable to function or user accessible feature.

An electric power connector for a connective terminal to be plugged in, which includes a carrier, a clamping member, a driven element, a sliding element, and a gear. The clamping member is disposed in the carrier and clamps the connective terminal. The driven element is movably disposed in the carrier and is arranged correspondingly to the clamping member. The sliding element is slidably connected in the carrier and includes a rack and a pushing portion. The gear is rotatably connected to the carrier and engages with the rack. The sliding element is configured to slide relative to the carrier by controlling the gear to rotate. The pushing portion moves with the sliding element to push the driven element to shift to force the clamping member to latch the connective terminal.

An apparatus for maintaining cross-talk below a predetermined threshold is disclosed. The apparatus comprises cable mating zone for connecting each of a first set of contact pairs with a respective twisted pair of cable conductors, a device mating zone for connecting each of a second set of contact pairs with a respective pair of device contacts and an intermediate transmission zone for connecting each of the first set of contact pairs with a respective one of the second set of contact pairs. In each of the zones the cross talk noise is prevented from exceeding a predetermined cross talk noise threshold.

An apparatus for maintaining cross-talk below a predetermined threshold is disclosed. The apparatus comprises cable mating zone for connecting each of a first set of contact pairs with a respective twisted pair of cable conductors, a device mating zone for connecting each of a second set of contact pairs with a respective pair of device contacts and an intermediate transmission zone for connecting each of the first set of contact pairs with a respective one of the second set of contact pairs. In each of the zones the cross talk noise is prevented from exceeding a predetermined cross talk noise threshold.

A pulse oximetry system for reducing the risk of electric shock to a medical patient can include physiological sensors, at least one of which has a light emitter that can impinge light on body tissue of a living patient and a detector responsive to the light after attenuation by the body tissue. The detector can generate a signal indicative of a physiological characteristic of the living patient. The pulse oximetry system may also include a splitter cable that can connect the physiological sensors to a physiological monitor. The splitter cable may have a plurality of cable sections each including one or more electrical conductors that can interface with one of the physiological sensors. One or more decoupling circuits may be disposed in the splitter cable, which can be in communication with selected ones of the electrical conductors. The one or more decoupling circuits can electrically decouple the physiological sensors.

Electrical wiring devices that incorporate clamp-type wire terminal connections are described. The electrical wiring devices include for example, single and duplex blade-type electrical receptacles, blade-type locking electrical receptacles, single or multi-pole electrical switches, combination switches and blade-type receptacles, blade-type plugs for electrical cords and blade-type connectors for electrical cords. The electrical wiring devices include a plurality of contact assemblies. Each contact assembly includes a wire terminal and a plunger.

A lighting system is incorporated into the ends of the electrical power cords to provide light when working in dark environments. The lighting source is preferably battery-operated, thus allowing the user to find power receptacles when in these dark environments. Additionally, a second power source is included in the plug receptacle end, which can be battery-powered or can be powered by electrical power carried within the power lines. The ends of the extension cord include supports.